Handcart

1. A handcart comprising: a cart frame including a receiving portion on which a shopping basket is placeable and a lateral portion extending in a width direction of the cart frame; a caster disposed at a bottom region of the cart frame; a code reader configured to perform code reading to obtain a scanned image including a code symbol on a product and attached to the lateral portion of the cart frame so as to be rotatable around the lateral portion of the cart frame to a first position at which an image capturing window of the code reader faces an inner space of the shopping basket on the receiving portion of the cart frame, and to a second position at which the image capturing window of the code reader faces a front of the cart frame; and a processing device configured to: perform image processing on the scanned image to determine an image region of the code symbol in the scanned image; measure a first length of the image region in a first direction and a second length of the image region in a second direction different from the first direction, and determine whether or not the image region is greater than a predetermined size based on the first and second lengths; and convert the code symbol to a product code represented thereby, upon determining that the image region of the code symbol in the scanned image is greater than the predetermined size.

2. The handcart according to claim 1 , wherein the first direction is along a first edge of the image region and the second direction is along a second edge of the image region crossing the first edge.

3. The handcart according to claim 1 , wherein the lateral portion of the cart frame is a handle portion disposed at a rear region of the cart frame.

4. The handcart according to claim 1 , wherein the code reader is configured to operate in a first mode during which the code reader carries out code reading in response to an operation of a scanner trigger, and in a second mode during which the code reader carries out code reading without the operation of the scanner trigger.

5. The handcart according to claim 1 , wherein the processing device does not perform conversion of the code symbol to the product code represented thereby when determining that the image region of the code symbol in the scanned image is less than the predetermined size.

6. The handcart according to claim 1 , further comprising: a gyro sensor configured to detect an orientation of the code reader, wherein the processing device is enabled to perform the image processing when the code reader is detected by the gyro sensor to be oriented so that the image capturing window of the code reader faces the inner space of the shopping basket on the receiving portion of the cart frame.

7. The handcart according to claim 1 , wherein the handcart further comprises a display device configured to display information corresponding to the obtained scanned image.

8. The handcart according to claim 1 , further comprising: a camera positioned to capture an image of a region including an inner space of the shopping basket.

9. The handcart according to claim 1 , further comprising: a battery coupled to a portion of the cart frame below the lateral portion, the battery being electrically connected to the code reader to supply power thereto.

10. The handcart according to claim 1 , wherein the code reader is attached to a center of the lateral portion in a width direction of the cart frame.

11. A method for registering a product code during shopping: placing a shopping basket on a receiving portion of a cart frame of a handcart; placing a product in the shopping basket; rotating a code reader attached to a lateral portion of the cart frame of the handcart around the lateral portion so that an image capturing window of the code reader faces an inner space of the shopping basket on the receiving portion; performing a code reading operation with the code reader to obtain a scanned image including a code symbol on the product, after the code reader has been rotated to position the image capturing window of the code reader to face the inner space of the shopping basket; performing image processing on the scanned image to determine an image region of the code symbol in the scanned image; measuring a first length of the image region in a first direction and a second length of the image region in a second direction different from the first direction; determining whether or not the image region is greater than a predetermined size based on the first and second lengths; and converting the code symbol to a product code represented thereby, upon determining that the image region of the code symbol in the scanned image is greater than the predetermined size.

12. The method according to claim 11 , wherein the first direction is along a first edge of the image region and the second direction is along a second edge of the image region crossing the first edge.

13. The method according to claim 11 , wherein said performing the code reading operation comprises: operating, by a user, a scanner trigger of the code reader; and in response to operation of the scanner trigger, starting the code reading operation.

14. The method according to claim 11 , further comprising: detecting an orientation of the code reader with a gyro sensor; and enabling the image processing when the code reader is detected by the gyro sensor to be oriented so that the image capturing window of the code reader faces the inner space of the shopping basket on the receiving portion of the cart frame.